JERICHO, NY, November 9, 2006 - Optimum Lightpath, the next-generation business broadband service provider of Cablevision Systems Corporation (NYSE: CVC), today announced that the Town of Greenwich, Connecticut, recently upgraded its entire metropolitan area network (MAN) infrastructure to Optimum Lightpath's Metro Ethernet service from an Asynchronous Transfer Mode (ATM) network that was also built and managed for the last five years by Optimum Lightpath.

The Town of Greenwich's new Metro Ethernet network carries all of its data and Internet traffic. In doing so, it connects the town's 16 municipal government facilities, 4 libraries and the Board of Education's 11 elementary schools and 3 middle schools, as well as Greenwich High School. Previously, the network traffic for the municipal government, the libraries and the Board of Education was carried over three physically disparate networks.

A variety of new applications deployed by the municipality, as well as a Board of Education project to adopt Voice over IP (VoIP) communications in all of its school locations, provided the justification to upgrade from 10/100 Mbps ATM to a minimum of 1 Gbps Metro Ethernet at each of the network's 36 locations.

"Not only is Metro Ethernet a more cost-efficient and stable platform to support advanced network applications, like VoIP, but also it provides the flexibility to use Ethernet Virtual Circuits (EVCs) to isolate and segregate voice, data and Internet traffic," said Boris Hutorin, Director of Information Technology, Town of Greenwich. "We had an aggressive deployment schedule and required a seamless transition between networks without any interruption. The reliability of Optimum Lightpath's network had a lot to do with their achieving each of our stated goals for this network upgrade."

"The Town of Greenwich quickly realized that Metro Ethernet delivered over fiber was by far the best option to get the bandwidth needed to support their advanced IP-based applications," said Kevin Curran, Senior Vice President of Marketing and Product Management, Optimum Lightpath. "It turned to Optimum Lightpath to design, build and deploy the network exactly to their specifications. Now, the new Metro Ethernet network gives them the ability to remotely manage sites, to use quality of service protocols to separate data and voice traffic and to totally segregate the police application traffic from the rest of the town network, as required by state law."